IsomerismProtein ConformationHeterotaxy SyndromeHeart Defects, CongenitalHeart AtriaSitus InversusHeart Septal DefectsAbnormalities, MultipleVenae CavaeDextrocardiaLevocardiaHeart Bypass, RightMolecular ConformationPulmonary VeinsErythrocruorinsPulmonary Veno-Occlusive DiseaseMagnetic Resonance SpectroscopyModels, MolecularGrowth Differentiation Factor 1Fetal HeartCyanosisAbortion, EugenicProtein Structure, SecondaryCrystallography, X-RayCircular DichroismProtein BindingBinding SitesNodal ProteinProtein Structure, TertiaryMolecular Sequence DataAtrioventricular NodeAmino Acid SequenceFetal DiseasesThermodynamicsVena Cava, InferiorProlineFontan ProcedureKineticsAzygos VeinProtein FoldingTachycardia, SupraventricularSinoatrial NodeMolecular StructureSpectrometry, FluorescenceStereoisomerismHeart BlockUltrasonography, PrenatalHeart ValvesNuclear Magnetic Resonance, BiomolecularAtrial AppendageMolecular Dynamics SimulationHydrogen BondingStructure-Activity RelationshipHeart Septal Defects, AtrialLigandsPrenatal DiagnosisModels, ChemicalInfant, NewbornProtein DenaturationSolutionsSyndromeMutationHydrogen-Ion ConcentrationTemperatureProtein Structure, QuaternaryBody PatterningPolymorphism, Single-Stranded ConformationalPregnancyEscherichia coliComputer SimulationMutagenesis, Site-DirectedEchocardiographyDimerizationPeptidesRecombinant ProteinsCatalytic DomainAmino Acid SubstitutionAsiaGestational AgeAllosteric RegulationTryptophanSpectrophotometry, UltravioletDNAPeptide FragmentsCatalysisNucleic Acid ConformationProteinsX-Ray DiffractionStatic ElectricityCrystallographySolventsProtein MultimerizationFluorescence Resonance Energy TransferAdenosine TriphosphateTime FactorsBacterial ProteinsSpleenWaterSubstrate SpecificityHydrolysis